#include <bits/stdc++.h>
using namespace std;
#define getchar getchar_unlocked
#define putchar putchar_unlocked
#define int int
/*
    file freopen
*/
#define name "arena"
inline void file() {
    freopen(name ".in", "r", stdin);
    freopen(name ".out", "w", stdout);
}
/* quick read and write */
int read() {
    int x = 0, f = 1, ch;
    do ch = getchar();
    while (!isdigit(ch) && ch != '-');
    if (ch == '-') f = -1, ch = getchar();
    while (isdigit(ch)) x = x * 10 + ch - '0', ch = getchar();
    return x * f;
}
void write(int x) {
    stack<int> s;
    if (x < 0) putchar('-'), x = -x;
    do s.push(x % 10), x /= 10;
    while (x);
    while (!s.empty()) putchar(s.top() + '0'), s.pop();
}
/* quick read and write */

signed main() {
    file();
    int x = read();
    write(x);
    return 0;
}